Russell's Biology Midterm Exam

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Title: Russell's Biology Midterm Exam
Description: What does Mitochondria do? make energy for cell
What is the variable that changes in an experiment? independent variable
What does the sodium-postassium pump require to move ions across the cell membrane? energy
What do Lysosomes do? Lysosomes break down cellular waste products, fats, carbohydrates, proteins.
What are the characteristics of all living things? reproduction metabolism cellular organization
-require energy to carry on life processes
-able to reproduce
-composed of cells living things
What are all living organisms composed of? cells
What characteristic of all living things does homeostasis relate most directly to? stability
What is the process by which organisms make more of their own kind? reproduction
Luring
Mid term
Biology cut apart and study
This is what causes children to resemble their parents heredity
During what process does carbon dioxide and water, in the presence of light, used to form sugars and oxygen gas? photosynthesis
What is an hypothesis? testable possible explanation of an observation
How are scientific hypotheses most often tested? by the process of experimenting
What is the planned procedure to test a hypothesis? experiment
What is the variable that is measured in an experiment? independent
What are atoms composed of? protons, neutrons, electrons
Where are the electrons of an atom? occupy the space surrounding the nucleus
What is the smallest particle of matter that can retain the chemical properties of carbon? carbon atom
What is a substance that is composed of only one type of atom? element
What is all matter composed of? atoms
What kind of molecules do Ionic bonds form between? opposite charges
What pH do Acidic solutions have? less than 7
What are organic macromolecule? carbohydrate lipid nucleic acid
What is sucrose? a carbohydrate
What organic molecules are classified as carbohydrates? sugars
Where are long chains of amino acids found? in proteins
What are saturated fats, cholesterol, and earwax? examples of lipids
What is a molecule shaped like a spiral staircase (double helix typical of? deoxyribonucleic acid
What are two types of nucleic acids? DNA and RNA
What does DNA store? heredity information
What is the molecule on which an enzyme acts? substrate
What conditions affects the function of enzymes? pH
heat
enzyme concentration
What power is the metric system of measurement based? powers of 10
What can cause fuzzy images viewed with a microscope? may be due to poor resolution
What would a microscope with a 3x objective lens and a 10x ocular lens produce a total magnification of? 30x
What would a microscope with a 5x objective lens and a 10x ocular lens produce a total magnification of? 50x
What would a microscope with a 4x objective lens and a 10x ocular lens produce a total magnification of? 40x
What are the smallest units of life? cells
What size must a cell be to function most efficiently? small
What is one difference between prokaryotes and eukaryotes? prokaryotes do not have a nucleus
What is a characteristic of prokaryotes? Their evolution preceded eukaryotes.

which means prokaryotes came first
What is an example of a prokaryotic cell? bacterium
What do only eukaryotic cells have? membrane-bound organelles
What is a structure within a eukaryotic cell that performs a specific function? organelle
What are short hairlike structures that protrude from the surface of a cell and are packed in tight rows? cilia
What encloses the contents of a cell, allows materials to enter and leave the cell, is selectively permeable? the cell membrane
What is the double membrane surrounding the nucleus? nuclear envelope
What is one imporant organelle that helps maintain homeostasis by moving substances from one part of the cell to another? endoplasmic reticulum
Number of Cards: 79
Author: mlrussel20
Created: 2007-12-15
Tags: midterms
Private: No
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